The Chelsea 880GJAHX-M3XS or 880GJAHXM3XS is an 880 Series Power Take-Off assembly built for heavy-duty, high-torque applications on 8-bolt manual transmissions. This unit uses lever mechanical shift and delivers output through a 1-1/2"-10T spline with a 1410 companion flange. Intermittent torque capacity reaches 500 lb-ft (678 Nm); check application pages for the rating specific to your installation. Shaft power output is rated at 48 HP at 500 RPM and 95 HP at 1000 RPM. The removable shift cover simplifies backlash adjustment at installation. Compatible transmissions include Eaton/Fuller, Allison, and Volvo/Mack platforms. Typical applications include fire trucks, oil field equipment, bulk haulers, winch systems, and large recovery vehicles. A genuine Chelsea part, sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
The 880 Series is designed for constant-mesh input gears, supporting both high-speed and high-torque service cycles. The cast iron housing withstands demanding environments common to oil field, aerial, mining, and on-highway recovery applications. Tapered cone bearings provide strong load-bearing capability across the full torque range. For installation guidance, refer to the 880 Series Owner's Manual (Parker document HY25-6880-M1/US) and the 880 Series Parts List (HY25-2880-M1_US), available from Parker Chelsea.
Features
8-Bolt mounting for compatibility with most manual transmissions including Eaton/Fuller, Allison, and Volvo/Mack
Lever mechanical shift with optional air control shift available
1-1/2"-10T spline output with 1410 series companion flange
Intermittent torque rating: 500 lb-ft (678 Nm) - verify actual rating on Chelsea application pages
Shaft power: 48 HP at 500 RPM, 95 HP at 1000 RPM
Removable shift cover for simplified, accurate backlash adjustment at installation
Dual-pump output supports mounting a hydraulic pump on each end of the PTO
Tech Specs
- Intermittent Torque: 500 lb-ft / 678 Nm (check application pages for actual rating)
- Transmission Compatibility: Eaton/Fuller, Allison, Volvo/Mack, and other manual 8-bolt transmissions
- Shift Type: Lever Mechanical
- Mounting Type: 8-Bolt
- Output Shaft Type: 1-1/2" - 10T Spline with 1410 Series Companion Flange
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 48 HP (500 RPM), 95 HP (1000 RPM) / 36 kW (500 RPM), 71 kW (1000 RPM)
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The 880 Series is designed for constant-mesh input gears, supporting both high-speed and high-torque service cycles. The cast iron housing withstands demanding environments common to oil field, aerial, mining, and on-highway recovery applications. Tapered cone bearings provide strong load-bearing capability across the full torque range. For installation guidance, refer to the 880 Series Owner's Manual (Parker document HY25-6880-M1/US) and the 880 Series Parts List (HY25-2880-M1_US), available from Parker Chelsea.
Parts Manual: Chelsea 880 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
